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TNETE211 Register Descriptions
B-7
TNETE211 100VG-AnyLAN Demand Priority Physical Media Independent (PMI) Interface
Figure B–3. TNETE211 Registers
TLPHY_sts
TLPHY_ctl
TLPHY_id
GEN_id_lo
GEN_id_hi
GEN_sts
GEN_ctl
Reserved
Reserved
Reserved
AN reserved
AN far end ability
AN advertisement
Not implemented
Not implemented
ThunderLAN PHY status register
ThunderLAN PHY identifier
Register
ThunderLAN PHY control registe
r
Reserved by 802.3
Not implemented
PHY generic identifier (low)
PHY generic identifier (high)
PHY generic status register
PHY generic control register
0x12
0x11
0x10
0x0F
through
0x07
0x06
0x05
0x04
0x03
0x02
0x01
0x00
Description
B.2.1 PHY Generic Control Register–GEN_ctl @ 0x0
Byte 0Byte 1
Reserved
COL
TEST
ISOLATEPDOWN0LOOPBKRESET
01234567
89101112131415
000
Table B–1. PHY Generic Control Register Bits
Bit Name Function
15 RESET PHY reset:
Writing a 1 to this bit causes the PHY and its internal registers to reset. This
bit is self-clearing; the bit returns a value of 1 when read until the internal reset is com-
plete. This bit also serves to reset the 802.12 MAC state machine to MAC0.
14 LOOPBK Loopback: This bit enables/disables internal loopback within the PHY device. When this
bit is set to 1 (default), data is internally wrapped within the PHY and does not appear on
the network. When this bit is set to 0, data is transmitted to and received from the network.
While the PHY is in the loopback state, all network lines are placed in a noncontentious
state. This bit also resets the 802.12 MAC state machine to MAC0.
13 0 Speed selection bit: Not implemented
12
0 Autoconfiguration enable: Not implemented